Mechanical stoker.



W. T. HANNA.

MECHANICAL STOKER.

APPLICATION IILBD MAR. 12, 1910.

Patented May 9, 1911.

2 SHEETS-BHEBT 1.

.W. T. HANNA.

MEGHANIGAL s'roxan.

APPLIQATIOB FILED KABJZ, 1910v 2 BHEBTS-BHEBT 2.

Patented May 9, 1911.

Wngsaea /a b/wm w v UNITED STATES PATENT OFFICE.

WILLIAM T. HANNA. OF CINCINNATI, OHIO, ASSIGNOR OF TWO'THIRDS TO MARTHAA.

HANNA AND ONE-THIRD T0 CLYDE P. JOHNSON. OF CINGanNATI, OHIO.

MECHANICAL STOKEE.

Specification of Letters B atant.

Patented May 0, 1911.

Application filed March 12, 1910. 'Serial No. 548,945.

To all whom it may concern:

Be it known that l. \\'u. .i.\n 'l. llxxxl, a citizen of the l nited.States. residing at Cincinnati. in the county of Hamilton and 'State ofOhio, have invented certain new and useful Improvements in ,Merhanicultokers, of which the following is a specification.

My invention relates to that class of stoke-rs in .which a feed plate,with guide wings adapted to oscillate thereon. is cmploycd formechanically directing the flow of the fuel as it enters the furnacefrom the fuel conduit, and the object of the invention is to provideimproved means for actuating the aide wings.

llv invention consists in the parts and comhination and arrangement ofparts hereinafter describe and claimed.

I have illustrated my invention as applied to a blast-feed locomotivestoker. but showing onl; so much of the stoker construction as willsutlice to show the connection of the invention therewith. v

In the drawings, Fi ure 1 is a front elevation oft a portion 0? the firefront of a locomotive furnace equipped with aw invention'; :Fig. 2 arear elevation of the same} Fig. 3 a side elevation of the guidewingactuating mechanism; Fi 4 an enlarged plan view of a portion 0 the same;

Fig. 5 a section on the line 5-5 of Fig. 1; Fig. 6 a lan view includingthe tire, door frame; FIg. T a skeleton perspective view showing therelationship of certain of the operating parts; and Fig. 8 an enlargedletail of a ratchet. wheel and the connecting parts. A designates thefurnace front, the. tire door frame the usual fuel opening hezugindicated in dotted lines. B the. fire door, a hinge knuckles on thedoor frame. hinge knuckles on the door. C the. hinge pintle. l a platesecured to the fire door to which the fuel conduit may be attached andprovided with an opening I] throu 'h which uel may pass from the fuelconduit to the interior of the furnace. and E a feed plate pro ectingwithin the door opening. 'lhc Feed plate i-z preferably angula r incross section with its upper faces forming 1| rulg: like that of a pitchroof, aiuLJhe plate preferably v-lulws dtm'mvardly from the feed to thedlsrhargc enrl.

l F, are guide wings; preferably in the form of rectangular plates.mounted at their rear ends upon pivot shafts G, G, in such manner that.by rocking the pivot shafts,

downwardly upon the u r feed plate.

H. H. are rock shafts mounted in brackets n projecting: from the doorframe, and having a jointed connection with the guide wing pivot shaftsand provided with crank arms I! and Ir whereby thev may be rocked.

Feed plates and guide wings of the ame general type are disclosed in mypending; applications, Serial Numbers 282.142. filed October 10, 1905,and 373,908, filed May in, 1907. and the parts thus far described,exceptas elements in newgcombinations, constitute no part. of the presentinvention. v

The reference numeral l'desi nates a bracket extending from the doorrame, 3 a ratchet wheel loosely mounted upon a iivot shaft 3 mounted inbracket 1, 4 a bar at apted to be reciprocatecl by any suitableconnection with the stoker engine (not shown), 5 a lever pivotallyconnected with bar 4, fulcrumed on pivot shaft 3 and carryin a pal let.6 adapted to engage with the. tcct 1 of the ratchet wheel andto actuatethe wheel, 7 a weighted pawl adapted to prevent reverse movement of theratchet wheel and to retard its direct action; and 8 and 8' armseccentrically connected with the ratchet wheel. I prefer to mount one ofthe eccentric arms in such manner that its hearing may be readilyshifted relatively to the axis of the ratchet wheel. In the form shown 9is a plate fixed to the ratchet wheel and provided with a slot 10extending across the axis thereof and with a recess 11 to receive thehead of a bolt 12', carnving a disk 13 upon which the eccentric arm 8 isloosely mounted. The bolt may be secured in either end of the slot hyscrewing up the nut which also clamps the disk in a fixed position. Theother arm 8 is mounted upon a cam 1 4. By changing the position of thehull, which serves as the eccentric shaft. of arm 8. from one end ofslot. 10 to the other end. the direction of motion of arm 8 relativelyto that of arm 8' may be reversed. lit llllll' free ends, the eccentricarms are pwotnlly connected with ernnk's, lfi'uml l5" P to actuate rockshafts l6 and ill mounted aces of the in bracket 1. ,To the other n ofthe k the guide wings may be swung u )wardlvand E shafts are fixedcranks, I7 and 17', carrying 1 upon their wrist pins rollers, 18,adapted to 1 travel in grom'es 19 in levers 20 and 20' l These loversare fulcrumed at one end upon 5 pivot bolts 21, and are ivotnllyconnected at their other ends to 10( 5 22 and 22 which are connccted byuniversal joints 23 with the cranks h and h which actuate the guide Ewing rock shaft. The )ivot bolts .21 are i carried by cranks L t fixe topivot shafts .25 mounted in the bracket and adapted to he actuated byhand bars 26 and 26. The hand bars; carry at their free ends, knobs 27having 5 ring pins 28 adapted to take into selected oles in series ofholes 29 arranged in the arc of a circle in segmental plates 30 and. 30.

It should be noted that the arcs of travel of the rollers 18 are fixed,that the cranl s 17 and 17 carryin the rollers are osltlvely driven andare a opted to actuate t e levers, and that the positions of the pivotbolts 21, which serve as fulcrums for the levers, may be changed,relatively to the arcs of travel I of the rollers, by means of the handbars acting through pivotshafts 25 and cranks The action of the leversupon the "dewin actuating rods is therefore large y depen out upon theposition of the lever fulcrums relatively to the arc of travel of therollers. I have illustrated hand bar 26 as axten'ding horizontally andsecured midway of the segmental plate. This positions the fulcrum oflever 20 in the same vertical plane with roller 18 when the latter is inthe center of its arc of travel and the lever will be actuated-throughits entire ossible sweep i and thereby cause guide wing l to beoscillated throiwh its entire sweep. I have illustrated hand bar 26' asextending vertically with its knob and upward. This positions thefulcrum of lever 20' in substantially the same horizontal plane withroller 18 and the roller will ride in the groove without imparting anysubstantial movement to the lever. lVith the lever in this positionguide wing F 111 be stationary at the bottom of its sweep. Reversing theposition of the hand bar would reverse the position of lever 20 and theguide wing would he stationary at the top of its sweep. By positioningthe hand bar at any angle between the vertical and the horizontal uponthe upper half of the segmental plate the guide wing may be caused tooscillate to and fro from its low position through any desired partofits possible swee By positioning the hand bar at any ang e between thevertical and the horizontal upon the lower half of the se mental platethe guide wing may be caused to oscillate to and fro from its highposition through an v desired part: of its ossible sweep. With bothguide wings osci lating throu h their entire sweep, the

fuel is discharge with practical uniformity 1 from the entire width ofthe feed plate. ll 1th hotlrguirlo wings stationar at the bottom oftheir sweep the fuel is do ivered from the outer edge of the plate 6nboth sides.

other oscillating through its entire sweep the feed is distributed withpractical uniformity from o ne side to the center line of the late.

T e operation is as follows: Bar 4 is recip rocated and imparts movementto lever 5 which, through pallet 6, actuates the ratchet wheel 2.Movement of the ratchet wheel imparts movement to tie eccentric-anus, 8and 8, wh1eh,through cranks,'15 and 15, rock shafts 16 and 16 and theroller carrying cranks, 17 and 17 cause the rollers 18 and 18 to travelin the ooves 19 and 19 in levers 20 and 20. T to pivot bolts 21 and 21being positioned as shown in the drawings, roller 18 will rock lever 20to and fro and movement of the lever will reciprocate rod 22 which,acting through crank h, rock shaft H and pivot shaft G, will cause guidewing F to be oscillated through its entire sweep. Roller 18 will impartno effective movementto lever 20 and.guide ,wing F will be practicallystationary at the bottom of its sweep. By positioning hand bar 26 sothat its osltion will correspond with that of hen bar 26, both leverswill he actuated to their full extent and both guide wings will heactuated through their full sweep. By positioning the hand bars at otherangles the Euide wings may be actuated from top orottom through anydesired portions'of their full sweep and either may be actuated throughone portion of its sweep whilethe other is actuated through a difi'erentportion. By changing the position of bolt. 12 from the position shown tothe other of slot 10 in plate 9 the eccentric arm 8 may be caused tomove upward while arm 8 moves downward and travel of the feed plateswill then be in reverse direction.

While I have illustrated the feed plate as angular in cross ection, anydesired form may be used without departing from the spiritof myinvention.

1 claim as my invention:

1. The combination with a furnace door casing .of a bracket; a feedplate; guide wings adapted to oscillate thereon; rods intenmediatclyconnected with and adapted to actuate the guide wings; a ratchet wheelpivotally mounted on the bracket; means for actuating the ratchet.wheel; arms eccentrically connected with the ratchet wheel; andconnections between the eccentric arms and the guide-wing actuating rodswhereby the latter may be actuated.

2. The combination with a furnace door actuate the guide wings; aratchet wheel pivotally mounted on the bracket; means for actuating theratchet wheel; arms eceeutricaily connected with the ratchet wheel;crank connections between the eccentric arms and the guide-wing actuatinrods whereby the latter may he actuate and means for adjusting the throwof the cranks.

3. The combinatlon with a furnace door casing of a bracket; a feedplate; uide wings ada ted to oscillate thereon; 1'0( 5 intermediate vconnected with and adapted to actuate the guide wings; a ratchet wheelpivotaily mounted on the bracket; -ineans for. actuating the ratchetwheel: arms cecentrically connected with the ratchet wheel;

crank connections between the eccentric arms and the gnidewing actuatingrods whereby the latter may be actuated; and means for adjusting thethrow 'of the cranks independently of each other.

4. The combination with a furnace door casing of a bracket; a feedplate; guide wings adapted to oscillate on the feed plate; pivot; shaftsadapted to actuate the feed plates; rock shafts adapted to actuate thepivot shafts; rods adapted to actuate the rock shafts; a ratchet wheelpivotally mounted upon the bracket: a reciprocating arm; a lever armpivotally connected therewith; a pallet carried by the lever arm adaptedto actuate the ratchet wheel; arms eccentrically connected with theratchet wheel; and connections between the eccentric arms and the rodswhich actuate the guide-wing rock shafts whereh the latter may beactuated.

Thecombination with a furnace door casing of a bracket: a feed plate;guidewings adapted to oscillate on the feed plate: pivot shafts adaptedto actuate the feed plates; ock shafts adapted to actuate the pivotshafts; rods adapted to actuate the rock shafts; a ratchet wheelpivotally mounted upon the bracket; a reciprocating arm; a lever armpivotally connected therewith; a pallet carried by the lever arm adaptedto actuate the ratchet wheel; arms ecccntrically connected with theratchet wheel: crank connections between the eccenarm; a lever armpivotally connected thcrt: with; a pallet carried by the lever armadapted to actuate the ratchet wheel; arms eccentrically connected withthe ratchet wheel; crank comm-lions between the t'vt't'llv tric arms andthe rods which actuate the guide-wing rock shafts whereby the latter maybe actuated: and means for adjnuing the throw of the cranksimlcpctulcrtly of each other.

. The combination with a furnace door casing of a bracket; a feed plate;guide wings adapted to oscillate thereon; rods in termediately connectedwith and adapted to actuate the guide win a ratchet wheel pivotallymounted on th: bracket: llltillts' for actuating the ratchet wheel: armseccentrically connected with the ratchet wheels; cranks pivotallyconnected with the eccentric arms; rock shafts adapted to be actuated bythe cranks; cranks fixed to the driving ends of the rock shafts; rollerscarriedhy the wrist pins of the cranks; and levers hav ing roovesadapted to receive the rollers, the evers being fulcrumed at one end andpivotaltv connected at the other end with the gnir e-win actuating arms.

8. The combination with a furnace door easing of a bracket: a feedplate; "uidc wings ada ted to oscillate thereon; rods intermediate vconnected with and adapted to actuate the guidewings; a ratchet wheelpivotallj' mounted on the bracket; means for actuating the ratchetwheel; arms eccentrically connected with the ratchet wheel: crankspirotali connected with the eccentric arms; rock shafts adapted to beactuated by the cranks: cranks fixed to the driving ends of the rockshafts; rollers carried by the wrist pins of the cranks; levers havinggrooves adapted to receive the rollers. the levers being fulcrnmed' atone end and pivotaily connected at the other end with the guide-wingactuating rods; and

means for changing the position of the fill cram of the leversrclatively to the arcs 01 travel of the rollens.

9. The combination with a furnace (loo! easing of a bracket: a feedplate: guidi wings adapted to osciilate thereon; rods in termedintelvconnected with and adapter to actuate the guide wings: a ratchet wheepivotally mounted on the bracket: mean for actuating the ratchet wheel:arms eceeu trically connected with the ratchet \\'lNtl:- crankspirotallv connected with the eeceutri arms: rk shafts adapted to beactuated b the cranks: cranks fixed to the driving end of the rockshafts: rollers carried h th wrist pins t the cranks: )lVOl shaftmounted in the bracket. hand are fixed t the pivots; cranks carried hthe pin shafts; pivot bolts- (til'lictl h the crank: levers t'uleruunnlat one end on the pin bolts and pivotally connected at the otln end withthe guide-win actuntiug rods and having grooves adapter to receive therollers; and means for securing the hand bars in selected positions.

10. The combination witlra furnace door casing of a bracket; :1 feedplate; guide wings ado ted to oscillate thereon; arms intermediate yconnected with and adapted to actuate the guide wings; a ratchet wheelpivotally mounted on the bracket; means for actuating the ratchet wheel;arms eccentrically connected with the ratchet. wheel; means for changingthe :osition of the cc" centric axis of one of t e arms relatively tothat of the other arm; and connections between the eccentric arms andthe guidewing actuating rods whereby the latter may be actuated.

11. The combination with a furnace door ra sing of a bracket: a foodplate; guide wings adapted to oscillate thereon; arms intermediatelyconnected with and adapted to actuate the guide wings; a ratchet Wheelpu'otally mounted on the bracket; means for actuating the ratchet wheel;a plate cured to the ratchet wheel and havin a slot extending across thecenterthcwo a halt adapted to be secured in either end oi the slot; adisk carried by the bolt; an arm loosely mounted thereon: another urinccccutricnl 3' connected with the ratchet wheel; and connections betweenthe arms and the oxide-wing uctnnting shaftsnvherchy the latter may heactuated.

'ILLIAM '1. HANNA.

Witnesses Auot'sr \V. Blown, llhWARl) Buocn.

